Bridge-alarm for trainmen.



"No. 657.506; Patented Sept. Il, |900.

R. J. BARRY.

BRIDGE ALARM FOR TRAINMEN. (Application led June 29, 1899.)

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UNITEDY ,STATES PATENT OFFICE. Y

ROBERT J. BARRY, 0E BANGORMAIVNE, AssIcNoR 0E ONE-HALE To CHARLES cULLINAN, on` SAME PLACE.

lysumela-ALARIVI Fon TRAINMEN.

sPEcIEIcATIoN forming part of Letters Patent No. 657,506, dated september 11, 1900.

Application filed Tune 29, 1899.`

T0 all whom/it may carecen/1,: Y

Be it known that l, ROBERT J. BARRY, a citizen of the United States, residing at Bangor, in the county of Penobscot and State of Maine, have r invented a new" and 'useful Bridge-Alarm forTrain men, of which the following is a specification.

My invention relates to alarms intended to notify trainnien of freight-trains of the approach of the train` to overhead bridges.

The object of the invention is to provide an improved alarm mechanism of this class, simple, cheap, durable, `and efficient, which shall be operated by passing cars and continu'- ously operated by each succeeding Wheel of the cars of the train, thereby eectually calling attention and eliminating accidents in striking bridges due to a lack of notice of the approach of the train to them.

With this object in View lnyinvention consists in lthe improved construction, arrangement, and combination of parts hereinafter fully described and afterward specifically pointed out in the claim.

In order to enable others skilled in the art to which my invention most nearly appertains to make and use the same, I will now proceed Like letters of reference mark the same parts Wherever they appear inthe several :figures of the drawings.

Referring to the drawings by letters, Aindicates one rail of a railway, and B B cross-ties or beams, each' of which extends some distance beyond the rail and supports an upright C at its outer end. The cross-beams B are connected by a cross-rod B', and the uperial No. '722.316- (No model.) l

` rights C C by a cross-rod C and a .top crossbar C".

D indicates a bridge-,piece connecting the crossbeams B B at the outer side of rail A, recessed on top (shown at D') and bored verticallyv to receive a vertical rod E, carryinga shoe F at its upper end, said shoe'being held atits normal height, projecting slightly above the top of the rail, by a spring G, coiled about the rod E, and having its upper and lower bearings against the under side of the shoe F and the upper side of the bridge D, respectively. The shoe is beveled off at its front and rear, as at F F', and provided at its center with a depending projection F2 to fit in the recess in the bridge and act as a guide when the shoe is depressed.

On the cross-rod B' is pivoted a level' G, pivotally connected at its inner end to the rod E `and at its outer end in the lower bifurcated end of a vertical bar H. In the upper bifurcated end of bar H is pivotally connected one ,end of a lever I, pivoted on the cross-r0d C',

the other end of lever I being turned upward at I. To the upturned end I of lever I is secured a spring bar or rod J, carrying a bell hammer or clapper K atits upper end. This bell-clapper K projects into abell L, hung at the outer end of a spring-bar M, secured to the cross-bar C. The rod E is rigidly secured to the projection of the shoe in such a position as to extend through the vertical opening in the bridge, and the spring fits loosely around the pin', thereby making a very simple and cheap construction. In assembling the parts the spring is placed in the recess and the shoe placed in position, with the pin projecting through the spring and throughthe perforation in the bridge in position to be secured to the end of the lever G.

The construction of my invention will be readily understood from the foregoing des'cription, and its operation may be described as follows: The alarm mechanism being located near :tn-overhead bridge,in either direction therefrom, the Wheel, as atvN,of a passing car will depress the shoe F, which will carry down with it the rod E and the inner end of lever G, elevating its outer end, the bar H,

wheel N passes off 'the'. shoe; thus Ievesing1` nzobysnow, ice, orrsleet.

leasesthe shoe Inthis man'e'rthe alarm,l

fj They whole mechanism, exceplvthelshoe n di" y `s"u"p'ported ybell on `tl'op f the'staudard@ level* -y`pix'fotally"secured to.thestandmd, one end of d kw-h'ih" is gpiovidedwith@springfsupported cl'apper in pesitien te'ehggewith lthev bell,l

iandln'jlilikhar connecting theeth'erfend' ofthe l level-with thelever that is securedte the pi.

` vhell, may be boxed in {.Qfprelet-jt fr'oi'fiu Y Jilryjfrom'various/causesand 'fljom `theint'e l; "ruption to its wolfkng'whichmightibefcztuse 'While I harvelhsmimed U@ desrbed i I` consider teberphle best m'eansnow known to l me foi*.earrjyihgFOutmy invention, Ido'inet-i Q y ,-,Wish to be understoodas -i'estrictng-myselff z 5t0 the' exact forms and'construct-ions'sh0wn,,

ras many slight changes therein olfvarialensv ytherefrom might suggest themselves to the olv- -l j i Having ,thus fully desbri'b'd riiy i'nverfit,

what I claim asuemand desire-to seciiifefbyprojecti ngend ofthe pinga'stztmlm'd ,f aspi'ig AWitnesses: i' i y l PATRICK .L ILANIGA'N,A

' HUGH T. GIALLAGHER. .Y 

